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A fix for satellite streaks


jcinpv
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You wouldn't even need to dither, since the "hot" pixels of the satellite track would only be in one image, whereas bad pixels on the sensor would be bad in every image.

You could use a stacking method that is designed to remove an overly bright pixel and stack the rest, on a pixel-by-pixel basis.

Two stacking techniques that come to mind are Min/Max Excluded Avg which removes the darkest and the brightest pixel and averages the rest or Sigma Clip which considers the values for a pixel that are going to be combined and calculates the standard deviation of the pixel values. You provide a standard deviation, like 2.55, and it excludes pixels outside of that range (plus or minus 2.55 standard deviations) and averages the rest.

The Sigma Clip works best if you have quite a few images that are being stacked. It also won't remove pixels if they are consistent (no satellite, no airplane track, no cloud).

Needless to say, I believe that there is no need for this functionality in BYE or BYN.

 

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